Heating attachment



l. A. GARDNER HEATING ATTACHMENT Filed April 10. 1925 Patented Nov. 10, 1925.

UNITED STATES IRWIN A. GARDNER, 0F CHICAGO, ILLINOIS.

HEATING ATTACHMENT.

Application filed Apri1 10,1925. SerialV No. 22,101.

T0 all whom t may concern.'

Be it known that I, IRWIN A. GARDNER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Heating Attachments, of which the following is a specification. My invention relates to heating attachments for furnaces. This attachment is designed especially for furnaces used for domesticheating purposes. Such furnaces are usually located in the basement of a building and no special provision is'made for heating the basement itself. The general object of my invention isto provide means whereby the basement or other furnace room may be heated by the flue gasesthus to obtain heat without reducing the amount of heat which will be available for the other parts of the building. In other words, it is my purpose to render available heat which would otherwise be wasted. This general object I' ac.- complish by providing coils which are eX- posed tothe furnace room and which convey the iiue gases from the furnace to the chimney. One of the specific objects of the invention is to provide an arrangement of coils by which any solid matter such as soot or dust may be precipitated and collected in a portion of the coil from which it may subsequently be readily removed. Another object is to provide a heating attachment of this character which will form a minimum obstruction to the free flow of the iue gases from the furnace to the chimney.

I accomplish my objects by the construction illustrated in the accompanying drawings in which- Figure 1 is a` side elevation partly in section showing the furnace, the coils, and the connection to the chimney.

Figure 2 is a top plan view of the parts shown in Figure 1, the chimney being shown in horizontal section.

Figure 3 is a sectional detail showing the cleanout in the bottom section of the heating coils.

Like numerals denote like parts throughout the several views.

In the form selected to illustrate the invention the furnace has a water jacket 1 with a connecting riser 2 and a return 11. The type of furnace may be greatly varied for my invention is equally applicable to steam hea-ting, hot water hea-ting or hot air heati `that the coils be of pipe of considerable diameter, for example 9 inches more or less, so that there would be no appreciable obstruction to the draft. I-Io-wever, the size of the pipe may be varied within reasonable limits without departing from the spirit of the invention. The' second section '12 con- ,y

nects with the chimney 14. y n Y The first section leads downto a connecting section 16 which isl approximately horizontal and connects with the bottom of the second `section 12. Thus there is a downdraftand an updraft section connected by the portion 16. This connecting section according to the present construction includes a T 18, the lateral branch 2O whereof extends downward and is normally kept closed by a cap 22. This cap is shown in detail at the bottom of Figure Sand consists of a disc having spring arms 24 which frictionally engage the inside of the branch 20. A handle 26 is provided for manipulating the cover.

In order to minimize the obstruction to the draft it is desirable that both coils progress in the same sense or angular direction. In the present instance as illustrated the gases always travel clockwise both in the downdraft section 10 and the updraft section 12. Thus there is no need for a reversal of the direction of travel of the flue gases and the resistance to flow is kept at a mini` mum. Ordinarily the coils are of the same length so that the delivery end 28 of the updraft coil 12 is approximately on a level with the port S although this also may be varied if desired.

The coils 10, 12 are of comparatively thin meta-l and are uncovered with the result that the heat of the flue gases is readily' transmitted to them and radiated by them into the room. I have found that an attachmentof this kind gives a large quantity of heat to the furnace room, and of course the heatis abstracted only from the flue gases after they h-ave left the furnace. Consequently the efficiency of the furnace for heating the remainder of the building is Vunimpaired.

In practically all furnaces, even those burning fue-l oil, a certain quantity of solid matter such as soot or dust will pass out of the fire box. W'ith my attachment these solid particles are practically all collected in the bottom section from which they may be readily removed by taking off the cap 22.

From the foregoing it will be evident that the attachment will radiate a substantial amount of heat into the furnace room without appreciably retarding the draft, and that in addition it affords means for collecting the solid matter from theflue gases and preventing same from passing out through the chimney. v

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A heating attachment for furnaces consisting of a double coil of pipe for conveyingtheflue gases from the furnace to the chimney, said coi-l being formed in two connecting sections having parallel axes.

2. A heating attachment for furnaces consisting of a double coil of pipe for conveying the flue Gases from the furnace to the chimney, sai-d? coil being formed in two connecting sections located side by side with parallel axes and the turns of the coils all progressing in the same sense or angular direction.

3. A heating attachment for furnaces consist-ing of a double coil of pipe for conveying' the flue gases from the furnace to the chimney', said coil being formed in two sections arranged side by side and connected at the bottom whereby any particles of matter will tend to collect in the connecting portion.

4. A heating attachment for furnaces comprising two coils for conveying the flue gases from the furnace to the chimney, the coils beingformed in two sections arranged side by side withparallel vertical axes, there being a connecting section at the bottom which is approximately horizontal, said; connecting section having a closeable opening through which solid matter may be removed.

5. Aheat-ing attachment for furnaces consisting of parallel coils of pipe for conveying the flue gases from the furnace to the chimney, the coils being arranged adjacent to each other with their axes vertical and having a connecting section at the bottom which is approximately horizontal, thereonnecting section including a T with its center branch ext-ending downward,'and a removable cover for closing the center branch whereby access may be had to the connecting section for removing particles of solid matter which may have collected there'.

In witness whereof, I have hereunto. sub scribed my name.

IRVIN A. GARDNER. 

